Type-writing machine



(Model.)

C. WING.

TYPE WRITING MACHINE.

UNITED STATES PATENT OFFICE..

CHAUNCEY XVING, OF GREENFIELD, MASSACHUSETTS.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent; No. 363,570, dated May 24, 18'87.

' Application filed November 1S, 1895. Serial No. 183,174. (Model.)

T0 all whom it may concern.-

Be it known that I, CHAUNCEY VVING, of Greenfield, Franklin county, Massachusetts, have invented a new and useful Improvement in Type-VVriting Machines, of which the fol lowing is a specification.

My invention relates to a more simple class of type-writer, in which the letters are arranged upon the teeth of a comb and by proper lever motion pressed upon thepaper beneath; andthe object of my invention is to impart to the pressurearm carrier a step-by-step niotion of uniform length corresponding to the spaces between the letters, all of which is ac complished inthe manner illust-rated in the accompanying drawings, in which- Figure l is a'. perspective of the machine; Fig. 2, a vertical section; Fig. 3, a detail view of theshaftearrying actuating'pawl; Fig. 4, adetail of pawl.

In Fig. 1, a is the hase of the machine, having upon posts or standards b and b rod c, and upon posts d and d rod e. Upon rod c is loosely fitted sliding and swinging type-carrierf, sliding loosely thereon. This carrier is provided with comb g,having a series of teeth, g', to which, upon the under surface near the end are attached the several letters of the alphabet, numbers, 85e. The arm or pointer h is provided with key 71, and extension z', which engages toothed rod j. Bod j is loosely attached to rod e at its extremities,as shown,and by means of counter-weights w normally bears up against the blade t' of arm h.

Loosely attached torod c is sliding and swinging impression-arm carrier la, provided with arms Zand m and iinger a. The armZ normally, by reason of the spring W', bears against the rod s. Through arm Z passes loosely shaft p,carrying upon one end counterweight w", and upon the other the segmental or moon-shaped pawl k', secured, as shown, in an arc concentric with the center of shaft p. This pawl is adapted to engage the notched rod j at a point a little to the left of a vertical line passing through the center of shaft p when the rodj is swung down upon it. The counterweight w" is adapted to be shifted to the opposite side of shaft p when it is desired to change in an opposite direction the motion of carriage k. To arm mof imprcssionarm carrier k is pivoted at 8 the bil'urcated lever u', one branch of which extends over and the other initier rod s. At the end of lever a' is arranged the inking-roll p', as shown. Finger n extends over the comb g sufliciently to engage a tooth of comb g when the machine is operated.

Between the projections f and f at the base of the machine is loosely adjusted roll u, which maybe conveniently revolved by means `of radial arms a. This roll is normally pressed upward against plate o by means of wire spring o', which impinges upon the roller in the two grooves, as shown. carrier k is provided with lettenplate x, and the rod e is provided with the stop y, by means of which the movement of the impression-arm carrier 7c is limited.

The practical operation of my said deviceis asfollows: Between the roll a and the plate cl is passed a sheetof paper in the usual manner. The range of motion of the impression-arm carrier la is proportioned to the width of the Sheet by means of stop y. The impression` arm carrier k is then slid on its support until the lettered plate x comes over the part of the paper which it is desired to print. Type-can rierf is then slid on rod c until pointer 7L is `over the desired letter. By a pressure upon the key It the blade engages notched rodj in a tooth under said letter, and upon further pressure swings said toothed rod down upon the paw] k. rlhis pressure, owing to the direction in which the force is applied, crowds the impressionarm carrier k one space to the right. At the same time the linger n engages a lettered tooth of comb g, and forces it down by the inking-roll p' upon the paper beneath, which is thereby imprinted. The inking-roll p is kept in appropriate position for contact with the teeth by means of its engagement with rod s.

Owing to the peculiar shape of thepawl the downward pressure swings it on its axis, the

shaft p, and at the same time crowds the irnpressionarm carrier la to the right until the op posite horn of the pawl touches rod j. As will be readily seen, this contact limits the space overwhich the impression-arm carrier is moved at one impulse on the key, one horn Impressiolrarm of the pawl operating as a propelling element to impart motion to the carriage and the other as a detent to arrest such motion when the proper limit is reached. On removing the pressure the pointer returns to rst position and the pawl,by reason of counter-weight 1'0", swings back and is in position to engage the next notch on the rodj.

Should it be desired to move the impression arm carrier 7c to the left, it is only necessary to shift the position of the weight w to the opposite side of shaft p.

Having 110W fully described niy invention, what I claim, and desire to secure by Letters Patent, is

1. In a typewriter, the comhinaiiomwilh the iinpre'ssioirarm carrier 7c, provided with pawl k', and type-carrier f, provided with key h and blade fi, of notched rack j, adapted to engage said pawl and blade when the key is pressed upon, substantially as described.

2. In a type-Writer, the combination, with the impressionarm carrier, of a pawl pivoted to the carrier, and a pivoted rack, j, the pawl 2' A I 363,570 v engaging the rack at a point lateral of a per pendicular line passing through said pivotal connection, and thereby imparting lateral n10- tion to said carrier,substantially as described.

3. The combination, with the impression` arm carrier, of the Weighted and reversible segmental pawl centrally pivoted to a shaft journaled in said carrier, and the racl ,wl1ereby the direction of motion of ,the carrier maybe reversed, substantially as described.

4. In a typewriter,the combina-tion, with a laterallymovable porton,as pressurearm carrier 7c, and a laterally-iinmovable*portion or rack,j, of a pawl arranged, substantially as descrihed,with reference to its pivotal attachment to the movable portion and its point of Contact with the immovable portion,so that when the two portions are caused to approach each other a lateral motion Will be imparted lto said carrier.

CHAUNCEY WING. Wit messes:

FRANK H. BOWEN, WILLIAM P. HAYES. 

